What are the advantages of the hierarchical structure of computer network system?

1. Hierarchical structure divides the application system into several layers, each layer only solves a part of the problems, and provides the overall solution through the cooperation of all layers. Decomposing a big problem into a series of relatively independent sub-problems and localizing them at each level effectively reduces the scale and complexity of a single problem and realizes the first and most critical step of complex system decomposition.

2. The hierarchical structure has good scalability, which provides a flexible framework for the evolution and growth of the application system and has good scalability. When adding new functions, there is no need to modify the existing code, and the business logic can be reused to the maximum extent. At the same time, it is easy to insert new layers between layers to expand the application.

3. The hierarchical architecture is easy to maintain. After the system is decomposed, different functions are encapsulated in different layers, and the coupling degree between layers is significantly reduced. Therefore, when modifying the code of a certain layer, as long as the interface between layers is not involved, it will not have a serious impact on other layers.

Extended data:

Architecture:

Computer network is a complex system with comprehensive technology. In order to allow different system entities to interconnect and interoperate, entities in different systems must follow mutually acceptable rules when communicating. The collection of these rules is called a protocol.

System refers to computers, terminals and various devices. Entities refer to various applications, file transfer software, database management systems, e-mail systems, etc. Interconnection means that different computers can be connected to each other through communication subnets for data communication.

Interoperability means that different users can use the same commands or operations on computers connected through communication subnets, and use resources and information in other computers just like using local resources and information. The computer network architecture provides corresponding norms and standards for the interconnection and interoperability between different computers.

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